Twice since I have taken the Boss out of storage, i have experienced a strange stall when i try to get on it. I would punch it after downshifting into second and it almost seems to backfire, then nearly stall, the suddenly jolt forward like I would expected initially. Almost like the behavior of a carburetor getting too much fuel all at once. Anyone else have this with track key? Is this bad winter gas? I have put in probably 3/4 of a tank of new fuel since getting out of storage. But both times were when i was trying to be cool, and end up looking really lame.